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package br.unesp.demac.bcc.soo.clarus.servlets;

import br.unesp.demac.bcc.soo.clarus.bean.Aluno;
import br.unesp.demac.bcc.soo.clarus.bean.Obra;
import br.unesp.demac.bcc.soo.clarus.dao.ObraDAO;
import br.unesp.demac.bcc.soo.clarus.dao.ObraDAOImp;
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author esaheki
 */
@WebServlet(name = "PesquisaServlet", urlPatterns = {"/PesquisaServlet"})
public class PesquisaServlet extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        String page = "";

        HttpSession session = request.getSession(true);
        Aluno aluno = (Aluno) session.getAttribute("aluno");
        if (aluno == null) {
            page = "erro.jsp";
            session.setAttribute("mensagem", "Sessão Invalida<br>Favor autenticar-se no sistema!");
        } else {
            String text = request.getParameter("txtBusca");

            if (text.equals("")) {
                page = "erro.jsp";
                session.setAttribute("mensagem", "Campo de busca vazio! Favor digitar!");
            } else {
                ObraDAO odao = new ObraDAOImp();
                List<Obra> obras = odao.pesquisarObra(text);

                if (!obras.isEmpty()) {
                    page = "result.jsp";
                    session.setAttribute("obras", obras);
                } else {
                    page = "erro.jsp";
                    session.setAttribute("mensagem", "Nenhuma obra encontrada");
                }
            }
        }

        request.getRequestDispatcher(page).forward(request, response);
        //response.sendRedirect("result.jsp");

    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
